Question

1. why does metal feel colder than wood, even though both are at room temperature?

a) metal absorbs less heat.
b) metal conducts heat away from your hand faster.
c) wood reflects more heat.
d) wood conducts heat better than metal.

1. which of the following requires no matter to transfer energy?

a) conduction b) convection c) radiation d) all three
part c - short response

1. explain the difference between heat and temperature.
2. why does warm air rise while cool air sinks?
3. how does the handle of a metal pot get hot even if its not directly in the flame?

Explanation:

• Question 4: Metals are good conductors of heat. When you touch metal, it conducts heat away from your hand faster than wood (which is a poor conductor). So, metal feels colder.
• Question 5: Radiation is the transfer of energy in the form of electromagnetic waves and does not require a medium (matter). Conduction and convection require a medium (solid for conduction, fluid for convection).
• Question 6: Heat is the transfer of thermal energy between objects due to a temperature difference. Temperature is a measure of the average kinetic energy of the particles in a substance.
• Question 7: Warm air is less dense than cool air. According to Archimedes' principle, less - dense substances rise in more - dense substances.
• Question 8: In a metal pot, heat is transferred by conduction. The heat from the flame is conducted through the body of the pot to the handle.

Answer:

• Question 4: b) Metal conducts heat away from your hand faster.
• Question 5: c) Radiation
• Question 6: Heat is the transfer of thermal energy, while temperature is a measure of the average kinetic energy of particles.
• Question 7: Warm air is less dense than cool air, so it rises (Archimedes' principle).
• Question 8: Heat is conducted through the metal pot to the handle.